﻿using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace CalculatorApp2
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            double sum1, sum2, result;
            sum1 = Convert.ToDouble(textBox1.Text);
            sum2 = Convert.ToDouble(textBox2.Text);
            switch (comboBox1.Text)
            {
                case "+":
                    result = sum1 + sum2;
                    textBox3.Text = result.ToString();
                    break;
                case "-":
                    result = sum1 - sum2;
                    textBox3.Text = result.ToString();
                    break;
                case "*":
                    result = sum1 * sum2;
                    textBox3.Text = result.ToString();
                    break;
                case "/":
                    result = sum1 / sum2;
                    textBox3.Text = result.ToString();
                    break;
            }
        }
    }
}
